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https://issues.apache.org/jira/browse/DRILL-4760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15360317#comment-15360317
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Paul Rogers commented on DRILL-4760:
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Drill's internal data type appear to have been strongly influenced by the
Parquet types. Users of the Drill Client API will need to know the
Parquet-to-Drill type mapping.
At the highest level, the following seems to be the mapping:
* Drill's "major type" corresponds to Parquet's storage type
* Drill's "minor type" corresponds to Parquet's logical type
(Exceptions & details needed.)
> Add technical description of Drill's Parquet support
> ----------------------------------------------------
>
> Key: DRILL-4760
> URL: https://issues.apache.org/jira/browse/DRILL-4760
> Project: Apache Drill
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 1.7.0
> Reporter: Paul Rogers
> Priority: Minor
>
> Drill documentation (http://drill.apache.org/docs/parquet-format/) provides a
> description of Drill's Parquet support. However, the material is mostly at
> the "marketing level", describing how wonderful the format is. Those who
> actually build systems would greatly benefit from improved technical content.
> This entry is a place to gather the required information so it is available
> to the Doc. team.
> Some of the proposed material might go into a new "Develper Info" section
> rather than clutter the existing user-oriented Parquet page.
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